Socrates & Stephanus are said to
be two, almost forgotten, early martyrs of Britain. Their existence is
somewhat questionable, but they do appear in Martyrologium
Hieronymianum MS.50 from Trinity College, Dublin (11th century) and
one of the earliest amplifications of Bede's Martyrology.

Tradition makes them disciples of St.
Amphibalus, converted after his famous, though short-lived, escape
from the Roman authorities during the religious persecutions of the
Emperor Diocletian (c.AD 304).

They were apparently martyred
together on 17th September, it has been suggested in Monmouthshire; though
the reasoning is unclear.